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NSR database version of May 19, 2024.

Search: Author = G.Jansen

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2023CH26      Phys.Lett. B 843, 138025 (2023)

S.Chen, F.Browne, P.Doornenbal, J.Lee, A.Obertelli, Y.Tsunoda, T.Otsuka, Y.Chazono, G.Hagen, J.D.Holt, G.R.Jansen, K.Ogata, N.Shimizu, Y.Utsuno, K.Yoshida, N.L.Achouri, H.Baba, D.Calvet, F.Chateau, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Level structures of 56, 58Ca cast doubt on a doubly magic 60Ca

NUCLEAR REACTIONS 1H(57Sc, 2p)56Ca, E=209 MeV/nucleon; 1H(59Sc, 2p)58Ca, E=199 MeV/nucleon, [57,59Sc secondary beams from 9Be(70Zn, X), E=345 MeV/nucleon, followed by separation and identification of ions of interest using the BigRIPS separator at RIBF-RIKEN facility]; measured reaction residues of 56Ca and 58Ca through identification by the SAMURAI spectrometer, Doppler-corrected Eγ, Iγ, (particle)γ-coin using the DALI2+ array using MINOS liquid hydrogen target. 56,58Ca; deduced energies of the first 2+ levels. Comparison with shell-model calculations with the GXPF1B Hamiltonian in full pf model space, and the state-of-the-art ab initio approaches: VS-IMSRG method, and CC calculations. Systematics of energies of the first 2+ states and S(2n) from experiment (N=22-36) and theory in N=22-54 Ca isotopes.

doi: 10.1016/j.physletb.2023.138025
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2022HA19      Phys.Rev. C 105, 064311 (2022)

G.Hagen, S.J.Novario, Z.H.Sun, T.Papenbrock, G.R.Jansen, J.G.Lietz, T.Duguet, A.Tichai

Angular-momentum projection in coupled-cluster theory: Structure of 34Mg

NUCLEAR STRUCTURE 8Be; calculated energies using symmetry-unrestricted Hartree-Fock and HF-RVAP as a function of the mass quadrupole moment q20. 20Ne, 34Mg; calculated the norm kernels and Hamiltonian kernels as function of the rotation angle using Hartree-Fock and CCD theories. 8Be, 20Ne, 34Mg; calculated projected coupled-cluster energies of the ground and excited states as a function of oscillator frequency using CCD, SLD, and SQD approximations. 44,46,48Ti, 48,50Cr; calculated low-lying states of J=0, 2 and 4 using projection-after-variation Hartree-Fock (PAV HF), variation-after-projection Hartree-Fock (VAP-HF), and projected CCD, SLD, and SQD methods, and compared to FCI results. Angular-momentum projection after variation with the disentangled coupled-cluster formalism and a Hermitian approach. Comparison with two-nucleon interaction from chiral effective field theory and for pf-shell nuclei within the traditional shell model, and with experimental data.

doi: 10.1103/PhysRevC.105.064311
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2022MA04      Phys.Rev.Lett. 128, 022502 (2022)

S.Malbrunot-Ettenauer, S.Kaufmann, S.Bacca, C.Barbieri, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, T.Duguet, R.F.Garcia Ruiz, W.Gins, C.Gorges, G.Hagen, H.Heylen, J.D.Holt, G.R.Jansen, A.Kanellakopoulos, M.Kortelainen, T.Miyagi, P.Navratil, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, S.J.Novario, T.Papenbrock, T.Ratajczyk, P.-G.Reinhard, L.V.Rodriguez, R.Sanchez, S.Sailer, A.Schwenk, J.Simonis, V.Soma, S.R.Stroberg, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Nuclear Charge Radii of the Nickel Isotopes 58-68, 70Ni

NUCLEAR MOMENTS 58,59,60,61,62,63,64,65,66,67,68Ni, 70Ni; measured frequency-time spectrum; deduced isotope shifts, mean-square charge radii. Comparison with ab initio approaches. Collinear laser spectroscopy beam line COLLAPS, ISOLDE/CERN.

doi: 10.1103/PhysRevLett.128.022502
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2021DJ02      Phys.Rev. C 104, 024324 (2021)

T.Djarv, A.Ekstrom, C.Forssen, G.R.Jansen

Normal-ordering approximations and translational (non)invariance

NUCLEAR STRUCTURE 4He, 16O; calculated center-of-mass (CM) excitation metrics and harmonic oscillator (HO) frequencies, ground-state energies per nucleon, eigenstates, point-proton radii. Single-reference normal-ordering two-body (SR-NO2B) approximation approach to potentially incorporate dominant three-nucleon force (3NF) as an effective two-nucleon force (2NF) in the framework of full no-core shell-model (NCSM) calculations, with and without three-nucleon forces.

doi: 10.1103/PhysRevC.104.024324
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2021KO08      Nat.Phys. 17, 439 (2021), Erratum Nat.Phys. 17, 539 (2021)

A.Koszorus, X.F.Yang, W.G.Jiang, S.J.Novario, S.W.Bai, J.Billowes, C.L.Binnersley, M.L.Bissell, T.E.Cocolios, B.S.Cooper, R.P.de Groote, A.Ekstrom, K.T.Flanagan, C.Forssen, S.Franchoo, R.F.Garcia Ruiz, F.P.Gustafsson, G.Hagen, G.R.Jansen, A.Kanellakopoulos, M.Kortelainen, W.Nazarewicz, G.Neyens, T.Papenbrock, P.-G.Reinhard, C.M.Ricketts, B.K.Sahoo, A.R.Vernon, S.G.Wilkins

Charge radii of exotic potassium isotopes challenge nuclear theory and the magic character of N = 32

NUCLEAR MOMENTS 36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52K; measured frequencies; deduced hyperfine structure spectra, charge radii, new magic numbers. Comparison with NNLO, HFB calculations.

doi: 10.1038/s41567-020-01136-5
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2021MO23      Nat.Phys. 17, 1099 (2021)

M.Mougeot, D.Atanasov, J.Karthein, R.N.Wolf, P.Ascher, K.Blaum, K.Chrysalidis, G.Hagen, J.D.Holt, W.J.Huang, G.R.Jansen, I.Kulikov, Yu.A.Litvinov, D.Lunney, V.Manea, T.Miyagi, T.Papenbrock, L.Schweikhard, A.Schwenk, T.Steinsberger, S.R.Stroberg, Z.H.Sun, A.Welker, F.Wienholtz, S.G.Wilkins, K.Zuber

Mass measurements of 99-101In challenge ab initio nuclear theory of the nuclide 100Sn

NUCLEAR REACTIONS La(p, X)99In/100In/101In, E=1.4 GeV; measured reaction products, TOF; deduced atomic masses. Comparison with AME2020, theoretical calculations.

doi: 10.1038/s41567-021-01326-9
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2021NO04      Phys.Rev.Lett. 126, 182502 (2021)

S.Novario, P.Gysbers, J.Engel, G.Hagen, G.R.Jansen, T.D.Morris, P.Navratil, T.Papenbrock, S.Quaglioni

Coupled-Cluster Calculations of Neutrinoless Double-β Decay in 48Ca

RADIOACTIVITY 48Ca(2β-); calculated nuclear matrix element for the neutrinoless ββ-decay using coupled-cluster theory and nuclear interactions from chiral effective field theory.

doi: 10.1103/PhysRevLett.126.182502
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2021SU22      Phys.Rev. C 104, 064310 (2021)

Z.H.Sun, G.Hagen, G.R.Jansen, T.Papenbrock

Effective shell-model interaction for nuclei "southeast" of 100Sn

NUCLEAR STRUCTURE 100Sn; calculated single-particle neutron and single-hole proton states from effective shell-model interaction for the valence space and using chiral nucleon-nucleon and three-nucleon forces and single-reference coupled-cluster theory and ΔNNLOGO potentials, with detailed matrix elements given in the Supplemental Material. 98Cd, 100In, 100,102Sn; calculated ground-state energies relative using 1.8/2.0(EM) and ΔNNLOGO potentials and compared to experimental data. 102,104,106,108Sn, 98Cd, 100,101,103,105,107In, 100,102,104,106Cd, ; calculated low-lying positive-parity levels from Jπ=0+ to 8+ for even-A and low-lying positive- and negative-parity levels from Jπ=1/2- to 13/2+ for odd-A using 1.8/2.0(EM) and ΔNNLOGO potentials, and compared to experimental data. Systematic derivation of the particle-hole variant of the shell-model coupled-cluster method to compute nuclei in the vicinity of 100Sn, with the shell-model effective interaction defined in a model space consisting of particles and holes.

doi: 10.1103/PhysRevC.104.064310
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2020BA27      Phys.Rev.Lett. 124, 222504 (2020)

S.Bagchi, R.Kanungo, Y.K.Tanaka, H.Geissel, P.Doornenbal, W.Horiuchi, G.Hagen, T.Suzuki, N.Tsunoda, D.S.Ahn, H.Baba, K.Behr, F.Browne, S.Chen, M.L.Cortes, A.Estrade, N.Fukuda, M.Holl, K.Itahashi, N.Iwasa, G.R.Jansen, W.G.Jiang, S.Kaur, A.O.Macchiavelli, S.Y.Matsumoto, S.S.Momiyama, I.Murray, T.Nakamura, S.J.Novario, H.J.Ong, T.Otsuka, T.Papenbrock, S.Paschalis, A.Prochazka, C.Scheidenberger, P.Schrock, Y.Shimizu, D.Steppenbeck, H.Sakurai, D.Suzuki, H.Suzuki, M.Takechi, H.Takeda, S.Takeuchi, R.Taniuchi, K.Wimmer, K.Yoshida

Two-Neutron Halo is Unveiled in 29F

NUCLEAR REACTIONS C(29F, X), E=255 MeV/nucleon; C(27F, X), E=250 MeV/nucleon; measured reaction products, En, In. 27,29F; deduced two-neutron Borromean halo. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.124.222504
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2020JI11      Phys.Rev. C 102, 054301 (2020)

W.G.Jiang, A.Ekstrom, C.Forssen, G.Hagen, G.R.Jansen, T.Papenbrock

Accurate bulk properties of nuclei from A = 20 to ∞ from potentials with Δ isobars

NUCLEAR STRUCTURE 2,3H, 3,4He, 16,22,24O, 40,48,50,52,54,56,58,60Ca, 78Ni, 90Zr, 100,132Sn; calculated binding energies, and charge radii for Ca isotopes, quadrupole moment for 2H, first 3- state of 16O, and first 2+ states of 22O, 24O and 48Ca. Coupled-cluster calculations with ΔNNLOGO interactions optimized from chiral effective field theory. Comparison with experimental data. Computed neutron-proton and proton-proton phase shifts for the contact and selected peripheral partial waves with the ΔNLOGO and ΔNNLOGO potentials.

doi: 10.1103/PhysRevC.102.054301
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2020NO10      Phys.Rev. C 102, 051303(R) (2020)

S.J.Novario, G.Hagen, G.R.Jansen, T.Papenbrock

Charge radii of exotic neon and magnesium isotopes

NUCLEAR STRUCTURE 18,20,22,24,26,28,30,32,34Ne, 22,24,26,28,30,32,34,36,38,40Mg; calculated charge radii, isotope shifts, ground-state energies, S(2n) using nucleon-nucleon and three-nucleon potentials from chiral effective field theory (EFT), and coupled-cluster methods. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.051303
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2019GY02      Nat.Phys. 15, 428 (2019)

P.Gysbers, G.Hagen, J.D.Holt, G.R.Jansen, T.D.Morris, P.Navratil, T.Papenbrock, S.Quaglioni, A.Schwenk, S.R.Stroberg, K.A.Wendt

Discrepancy between experimental and theoretical β-decay rates resolved from first principles

NUCLEAR STRUCTURE 3H, 6Li, 7Be, 8He, 10C, 14O, 19,24Ne, 37K, 25,28Al, 24,26Na, 30Mg, 33,34P, 42,43,46Sc, 42,45Ti, 45,47V, 100Sn; calculated the Gamow–Teller strength for β decay.

doi: 10.1038/s41567-019-0450-7
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2019LI10      Phys.Rev.Lett. 122, 072502 (2019)

H.N.Liu, A.Obertelli, P.Doornenbal, C.A.Bertulani, G.Hagen, J.D.Holt, G.R.Jansen, T.D.Morris, A.Schwenk, R.Stroberg, N.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

How Robust is the N=34 Subshell Closure? First Spectroscopy of 52Ar

NUCLEAR REACTIONS 1H(53K, 2p), E=245 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, σ. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.122.072502
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2019RA06      Phys.Rev. C 99, 021301 (2019)

J.S.Randhawa, R.Kanungo, M.Holl, J.D.Holt, P.Navratil, S.R.Stroberg, G.Hagen, G.R.Jansen, M.Alcorta, C.Andreoiu, C.Barnes, C.Burbadge, D.Burke, A.A.Chen, A.Chester, G.Christian, S.Cruz, B.Davids, J.Even, G.Hackman, J.Henderson, S.Ishimoto, P.Jassal, S.Kaur, M.Keefe, D.Kisliuk, R.Krucken, J.Liang, J.Lighthall, E.McGee, J.Measures, M.Moukaddam, E.Padilla-Rodal, A.Shotter, I.J.Thompson, J.Turko, M.Williams, O.Workman

Observation of excited states in 20Mg sheds light on nuclear forces and shell evolution

NUCLEAR REACTIONS 2H(20Mg, d), (20Mg, d'), E=8.5 MeV/nucleon, [secondary 20Mg beam produced in Si(p, X), E=480 MeV fragmentation reaction using SiC target at ISAC-II facility]; measured scattered deuteron spectra, differential σ(θ) using annular single-sided silicon strip detector array and CsI(Tl) detectors (IRIS reaction spectroscopy facility) at TRIUMF. 20Mg; deduced levels, J, π, proton-unbound resonances. Comparison with ab initio calculations using the valence-space in-medium similarity renormalization-group (VS-IMSRG) approach.

doi: 10.1103/PhysRevC.99.021301
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2018BA42      Phys.Rev. C 98, 054301 (2018)

A.Bansal, S.Binder, A.Ekstrom, G.Hagen, G.R.Jansen, T.Papenbrock

Pion-less effective field theory for atomic nuclei and lattice nuclei

NUCLEAR STRUCTURE 3H, 3,4He, 16O, 40Ca; calculated binding energies per nucleon and point-proton radii, g.s. energy and separation momentum of 3H and 4He, correlation between the triton and 4He binding energies. Pion-less effective field theory (EFT) as discrete variable representation (DVR) in the harmonic oscillator basis at leading-order and next-to-leading-order. Relevance to different lattice quantum chromodynamics (QCD) approaches to light nuclei.

doi: 10.1103/PhysRevC.98.054301
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2018MO07      Phys.Rev.Lett. 120, 152503 (2018)

T.D.Morris, J.Simonis, S.R.Stroberg, C.Stumpf, G.Hagen, J.D.Holt, G.R.Jansen, T.Papenbrock, R.Roth, A.Schwenk

Structure of the Lightest Tin Isotopes

NUCLEAR STRUCTURE 100,108,116,124,132Sn, 101Sn, 105Te; calculated energy levels, J, π using nucleon-nucleon and three-nucleon forces constrained by data of few-nucleon systems.

doi: 10.1103/physrevlett.120.152503
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2018RO26      Phys.Rev. C 98, 044625 (2018)

J.Rotureau, P.Danielewicz, G.Hagen, G.R.Jansen, F.M.Nunes

Microscopic optical potentials for calcium isotopes

NUCLEAR REACTIONS 40Ca(n, n), E=5.17, 6.34 MeV; 48Ca(n, n), E=4.00, 7.81 MeV; calculated differential σ(θ), real and imaginary parts of the diagonal optical potential and scattering phase shifts. 41,49Ca; calculated energies of bound states, and real part of the radical optical potentials. Green's function approach with coupled-cluster method with chiral nucleon-nucleon and three-nucleon interaction NNLOsat, and the chiral nucleon-nucleon interaction NNLOop. Comparison with experimental data.

doi: 10.1103/PhysRevC.98.044625
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2018SU23      Phys.Rev. C 98, 054320 (2018)

Z.H.Sun, T.D.Morris, G.Hagen, G.R.Jansen, T.Papenbrock

Shell-model coupled-cluster method for open-shell nuclei

NUCLEAR STRUCTURE 6,7,8He, 6,7,8Li; calculated low-lying levels, J, π, squared point-proton radii, and isotope shifts using shell-model coupled-cluster method employing 4He core. Comparison with other theoretical predictions.

doi: 10.1103/PhysRevC.98.054320
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2018WU03      Phys.Rev. C 97, 054306 (2018)

Q.Wu, B.S.Hu, F.R.Xu, Y.Z.Ma, S.J.Dai, Z.H.Sun, G.R.Jansen

Chiral NNLOsat descriptions of nuclear multipole resonances within the random-phase approximation

NUCLEAR STRUCTURE 4He, 16,22,24O, 40,48Ca; calculated charge radii, strength distributions and centroids of isoscalar monopole, isovector dipole and isoscalar quadrupole resonances, transition densities of protons and neutrons using random-phase approximation (RPA) framework with realistic nuclear forces and chiral potential NNLOsat. 22,24O; deduced low-lying strengths. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.054306
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2016GA34      Nat.Phys. 12, 594 (2016)

R.F.Garcia Ruiz, M.L.Bissell, K.Blaum, A.Ekstrom, N.Frommgen, G.Hagen, M.Hammen, K.Hebeler, J.D.Holt, G.R.Jansen, M.Kowalska, K.Kreim, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, T.Papenbrock, J.Papuga, A.Schwenk, J.Simonis, K.A.Wendt, D.T.Yordanov

Unexpectedly large charge radii of neutron-rich calcium isotopes

NUCLEAR REACTIONS U(p, X)43Ca/44Ca/45Ca/46Ca/47Ca/48Ca/49Ca/50Ca/51Ca/52Ca, E=1.4GeV; measured hyperfine structure spectra; deduced charge radii. Comparison with available data.

doi: 10.1038/nphys3645
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2016HA27      Nat.Phys. 12, 186 (2016)

G.Hagen, A.Ekstrom, C.Forssen, G.R.Jansen, W.Nazarewicz, T.Papenbrock, K.A.Wendt, S.Bacca, N.Barnea, B.Carlsson, C.Drischler, K.Hebeler, M.Hjorth-Jensen, M.Miorelli, G.Orlandini, A.Schwenk, J.Simonis

Neutron and weak-charge distributions of the 48Ca nucleus

NUCLEAR STRUCTURE 48Ca; calculated neutron skin parameters, radii. Ab initio calculations.

doi: 10.1038/nphys3529
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2016HA32      Phys.Rev.Lett. 117, 172501 (2016)

G.Hagen, G.R.Jansen, T.Papenbrock

Structure of 78Ni from First-Principles Computations

NUCLEAR STRUCTURE 48Ca, 77,78,79,80Ni; analyzed available data; calculated energy levels, J, π.

doi: 10.1103/PhysRevLett.117.172501
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2016HA34      Phys.Scr. 91, 063006 (2016)

G.Hagen, M.Hjorth-Jensen, G.R.Jansen, T.Papenbrock

Emergent properties of nuclei from ab initio coupled-cluster calculations

COMPILATION 4,8He, 14C, 16O, 40,48Ca, 56Ni; compiled gs energy, mass excess, difference between theoretical charge radii and data; calculated gs energy, mass excess, charge radii using ab initio approach with chiral NNLOsat interaction.

NUCLEAR STRUCTURE 16,22,24,28O; calculated gs energy, mass excess using two NNLOsat interactions. Compared to available data. 17,23,25O, 53,55,61Ca; calculated low-lying unbound levels, J, π using harmonic oscillator HF basis and Gamow-Hartree-Fock basis. 20Ne, 24Mg; calculated yrast states using CCEI (Coupled Cluster Effective Interaction) and USDB; compared to data.

doi: 10.1088/0031-8949/91/6/063006
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2016JA03      Phys.Rev. C 94, 011301 (2016)

G.R.Jansen, M.D.Schuster, A.Signoracci, G.Hagen, P.Navratil

Open sd-shell nuclei from first principles

NUCLEAR STRUCTURE 18,19,20,21,22,23,24,25,26,27,28,29,30Ne, 20,21,22,23,24,25,26,27,28,29,30Mg; calculated ground-state energies. 24F, 19,20,24,25,26,27Ne, 22,23,24,25,26Mg; calculated low-spin levels, J, π, B(E2) strengths. Calculations are based on an extension of ab initio coupled-cluster effective interaction (CCEI) method. Comparison with experimental data taken from the ENSDF database.

doi: 10.1103/PhysRevC.94.011301
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2016KA37      Phys.Rev.Lett. 117, 102501 (2016)

R.Kanungo, W.Horiuchi, G.Hagen, G.R.Jansen, P.Navratil, F.Ameil, J.Atkinson, Y.Ayyad, D.Cortina-Gil, I.Dillmann, A.Estrade, A.Evdokimov, F.Farinon, H.Geissel, G.Guastalla, R.Janik, M.Kimura, R.Knobel, J.Kurcewicz, Yu.A.Litvinov, M.Marta, M.Mostazo, I.Mukha, C.Nociforo, H.J.Ong, S.Pietri, A.Prochazka, C.Scheidenberger, B.Sitar, P.Strmen, Y.Suzuki, M.Takechi, J.Tanaka, I.Tanihata, S.Terashima, J.Vargas, H.Weick, J.S.Winfield

Proton Distribution Radii of 12-19C Illuminate Features of Neutron Halos

NUCLEAR REACTIONS Be(20Ne, X), (40Ar, X)12C/13C/14C/15/16C/17C/18C/19C, E=1 GeV/nucleon; measured reaction products; deduced σ, root-mean-square proton and matter radii, neutron skin thickness. Comparison with ab initio calculations.

doi: 10.1103/PhysRevLett.117.102501
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2016MI19      Phys.Rev. C 94, 034317 (2016)

M.Miorelli, S.Bacca, N.Barnea, G.Hagen, G.R.Jansen, G.Orlandini, T.Papenbrock

Electric dipole polarizability from first principles calculations

NUCLEAR STRUCTURE 4He, 16,22O, 40Ca; calculated electric dipole polarizability, photoabsorption response functions. Coupled-cluster method with bound-state techniques, and using different interactions from chiral effective field theory. Comparison with experimental data. Relevance to radii of proton and neutron distributions.

doi: 10.1103/PhysRevC.94.034317
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2015EK01      Phys.Rev. C 91, 051301 (2015)

A.Ekstrom, G.R.Jansen, K.A.Wendt, G.Hagen, T.Papenbrock, B.D.Carlsson, C.Forssen, M.Hjorth-Jensen, P.Navratil, W.Nazarewicz

Accurate nuclear radii and binding energies from a chiral interaction

NUCLEAR STRUCTURE 2H, 4,8He, 6,9Li, 14C, 16O, 40Ca; calculated ground-state energies, charge radii, quadrupole moment for deuteron. 6Li, 14C, 16O, 22,24F, 22,24O, 40Ca; calculated levels, J, π, charge density in 16O, scattering lengths, and effective ranges in low-energy proton-proton scattering, scattering phase shifts in low-energy neutron-proton scattering, half-life for the β- decay of 3H; deduced consistently optimized interaction from chiral EFT at NNLO for nuclei and infinite nuclear matter. Coupled-cluster calculations based on chiral effective field theory interaction (NNLOsat). Comparison with experimental data.

doi: 10.1103/PhysRevC.91.051301
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2015KA15      Phys.Rev.Lett. 114, 192502 (2015)

R.Kanungo, A.Sanetullaev, J.Tanaka, S.Ishimoto, G.Hagen, T.Myo, T.Suzuki, C.Andreoiu, P.Bender, A.A.Chen, B.Davids, J.Fallis, J.P.Fortin, N.Galinski, A.T.Gallant, P.E.Garrett, G.Hackman, B.Hadinia, G.Jansen, M.Keefe, R.Krucken, J.Lighthall, E.McNeice, D.Miller, T.Otsuka, J.Purcell, J.S.Randhawa, T.Roger, A.Rojas, H.Savajols, A.Shotter, I.Tanihata, I.J.Thompson, C.Unsworth, P.Voss, Z.Wang

Evidence of Soft Dipole Resonance in 11Li with Isoscalar Character

NUCLEAR REACTIONS 2H(11Li, X)7Li/8Li/9Li/10Li/11Li, E=5.5 MeV/nucleon; measured reaction products. 11Li; deduced yields, σ(θ), excitation energy, soft dipole resonance. Comparison with ab initio calculations in the coupled cluster framework.

doi: 10.1103/PhysRevLett.114.192502
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2015SI12      Phys.Rev. C 91, 064320 (2015)

A.Signoracci, T.Duguet, G.Hagen, G.R.Jansen

Ab initio Bogoliubov coupled cluster theory for open-shell nuclei

NUCLEAR STRUCTURE 16,18,20O, 18Ne, 20Mg; calculated ground-state energies and the cluster amplitudes at the singles and doubles level (BCCSD), algebraically and diagrammatically. Ab initio Bogoliubov coupled cluster (BCC) theory for open shell nuclei.

doi: 10.1103/PhysRevC.91.064320
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2014EK01      Phys.Rev.Lett. 113, 262504 (2014)

A.Ekstrom, G.R.Jansen, K.A.Wendt, G.Hagen, T.Papenbrock, S.Bacca, B.Carlsson, D.Gazit

Effects of Three-Nucleon Forces and Two-Body Currents on Gamow-Teller Strengths

RADIOACTIVITY 14C, 22,24O(β-); calculated quenching factor; deduced a novel coupled-cluster technique for the computation of spectra in the daughter nuclei and made several predictions and spin assignments in the exotic neutron-rich isotopes of fluorine.

NUCLEAR STRUCTURE 14N, 22,24F; calculated energy levels, J, π.

doi: 10.1103/PhysRevLett.113.262504
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2014JA14      Phys.Rev.Lett. 113, 142502 (2014)

G.R.Jansen, J.Engel, G.Hagen, P.Navratil, A.Signoracci

Ab Initio Coupled-Cluster Effective Interactions for the Shell Model: Application to Neutron-Rich Oxygen and Carbon Isotopes

NUCLEAR STRUCTURE 19,20,21,22,23,24O, 17,18,19,20,21,22C; calculated energy levels, J, π. Comparison with available data.

doi: 10.1103/PhysRevLett.113.142502
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2014VA02      Phys.Rev. C 89, 054323 (2014)

Zs.Vajta, M.Stanoiu, D.Sohler, G.R.Jansen, F.Azaiez, Zs.Dombradi, O.Sorlin, B.A.Brown, M.Belleguic, C.Borcea, C.Bourgeois, Z.Dlouhy, Z.Elekes, Zs.Fulop, S.Grevy, D.Guillemaud-Mueller, G.Hagen, M.Hjorth-Jensen, F.Ibrahim, A.Kerek, A.Krasznahorkay, M.Lewitowicz, S.M.Lukyanov, S.Mandal, P.Mayet, J.Mrazek, F.Negoita, Yu.-E.Penionzhkevich, Zs.Podolyak, P.Roussel-Chomaz, M.G.Saint-Laurent, H.Savajols, G.Sletten, J.Timar, C.Timis, A.Yamamoto

Excited states in the neutron-rich nucleus 25F

NUCLEAR REACTIONS C(26Ne, 25F), (27Na, 25F), (28Na, 25F), [secondary 26Ne, 27,28Na beams from C(36S, X), E=77.5 MeV/nucleon primary reaction], E=54-65 MeV/nucleon; measured Eγ, Iγ, γγ-, (25F)γ-coin, time-of-flight using SPEG magnetic spectrometer and an array of 74 BaF2 crystals for γ-rays at GANIL facility, GEANT4 simulations. 25F; deduced levels, J, π. Comparison with shell-model calculations, coupled-cluster theory, and other data.

doi: 10.1103/PhysRevC.89.054323
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2013EK01      Phys.Rev.Lett. 110, 192502 (2013)

A.Ekstrom, G.Baardsen, C.Forssen, G.Hagen, M.Hjorth-Jensen, G.R.Jansen, R.Machleidt, W.Nazarewicz, T.Papenbrock, J.Sarich, S.M.Wild

Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order

NUCLEAR STRUCTURE 3H, 3,4He, 10B, 17,22,24O, 40,48,50,52,54,56Ca; calculated energy of the first 2+ state, energy per nucleon for neutron matter, phase shifts. The nucleon-nucleon interaction from chiral effective field theory at next-to-next-to-leading order (NNLO).

doi: 10.1103/PhysRevLett.110.192502
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2013JA13      Phys.Rev. C 88, 024305 (2013)

G.R.Jansen

Spherical coupled-cluster theory for open-shell nuclei

NUCLEAR STRUCTURE 6He, 6Li, 18O, 18F, 18Ne; calculated levels, J, π, configuration, center of mass Hamiltonian. Equation-of-motion coupled-cluster formalism with chiral interaction N3LO. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.024305
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2013LE03      Phys.Rev.Lett. 110, 082502 (2013)

A.Lepailleur, O.Sorlin, L.Caceres, B.Bastin, C.Borcea, R.Borcea, B.A.Brown, L.Gaudefroy, S.Grevy, G.F.Grinyer, G.Hagen, M.Hjorth-Jensen, G.R.Jansen, O.Llidoo, F.Negoita, F.de Oliveira, M.-G.Porquet, F.Rotaru, M.-G.Saint-Laurent, D.Sohler, M.Stanoiu, J.C.Thomas

Spectroscopy of 26F to Probe Proton-Neutron Forces Close to the Drip Line

RADIOACTIVITY 26F(β-), (β-n) [from Be(36S, X)26F, E=77.6 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced decay scheme, J, π, long-lived isomer T1/2. Comparison with available data.

doi: 10.1103/PhysRevLett.110.082502
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2012HA19      Phys.Rev.Lett. 108, 242501 (2012)

G.Hagen, M.Hjorth-Jensen, G.R.Jansen, R.Machleidt, T.Papenbrock

Continuum Effects and Three-Nucleon Forces in Neutron-Rich Oxygen Isotopes

NUCLEAR STRUCTURE 18,22,23,24O; calculated level energies, J, π, point matter and charge radii, 24O long-lived resonances. Chiral effective field interaction, comparison with available data.

doi: 10.1103/PhysRevLett.108.242501
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2012HA26      Phys.Rev.Lett. 109, 032502 (2012)

G.Hagen, M.Hjorth-Jensen, G.R.Jansen, R.Machleidt, T.Papenbrock

Evolution of Shell Structure in Neutron-Rich Calcium Isotopes

NUCLEAR STRUCTURE 42,48,50,52,53,54,55,56,61Ca, 50,54,56Ti; calculated ground state energies, J, π. Chiral effective field theory, comparison with available data.

doi: 10.1103/PhysRevLett.109.032502
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2011JA06      Phys.Rev. C 83, 054306 (2011)

G.R.Jansen, M.Hjorth-Jensen, G.Hagen, T.Papenbrock

Toward open-shell nuclei with coupled-cluster theory

NUCLEAR STRUCTURE 3,4,5,6He; calculated ground-state energies, first 2+ state energy in 6He, expectation value of total angular Momentum. Method based on equation-of-motion coupled-cluster theory.

doi: 10.1103/PhysRevC.83.054306
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1982GL10      Nucl.Phys. A390, 365 (1982)

L.Glantz, I.Koersner, G.Jansen, A.Johansson, B.Sundqvist, Y.Koike

Deuteron Breakup by α-Particles at 13, 15 and 18 MeV

NUCLEAR REACTIONS 2H(α, pα), E=13, 15, 18 MeV; measured σ(Eα, E(p), θα, θ(p)). Enriched target.

doi: 10.1016/0375-9474(82)90275-5
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1972BA77      Nucl.Phys. A194, 193 (1972)

A.Bamberger, G.Jansen, B.Povh, D.Schwalm, U.Smilansky

Coulomb Excitation of the 1/2- State in 7Li

NUCLEAR REACTIONS 208Pb(7Li, 7Li)208Pb, E(7Li)=18-22 MeV; measured σ at angles 170° > θ > 50°. 7Li deduced B(E2); estimated Q3/2. Enriched targets.

doi: 10.1016/0375-9474(72)91059-7
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1969JA02      Nucl.Phys. A128, 247 (1969)

G.Jansen, H.Morinaga, C.Signorini

A New Isomeric State in N = 81 Nuclei: 145mGd

RADIOACTIVITY 139mCe, 141mNd, 143mSm, 145mGd, 145Gd [from 138Ba, 140Ce, 142Nd, 144Sm(3He, 2n)]; measured Eγ, T1/2; deduced levels. 145Eu deduced levels. Enriched 144Sm target, Ge(Li) detector.

doi: 10.1016/0375-9474(69)90990-7
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